20306555

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{101}}^1\times {\mathrm{509}}^1$

素因数の和:694

約数の個数: 16

約数和(自身を含む): 24969600

約数和(自身を除く): 4663045

約数列:

[1, 5, 79, 101, 395, 505, 509, 2545, 7979, 39895, 40211, 51409, 201055, 257045, 4061311, 20306555]

約数ペア:

[(1, 20306555), (5, 4061311), (79, 257045), (101, 201055), (395, 51409), (505, 40211), (509, 39895), (2545, 7979)]